Polyamide comprising fluorinated xylyene moieties
AssigneeICI Americas Inc.
InventorWilliam W. Bristowe
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Abstract
Polyamide polymers are made by reacting fluorinated xylylene diamine or the corresponding isocyanate derivatives with polycarboxylic moieties such as anhydrides or acid chlorides. The polymers thus formed may be cast into films having superior impermiability to gases and moisture.
Claims7
A polyamide polymer consisting essentially of the recurring units of Formula I wherein, A is a divalent alkylene or arylene radical having 4-18 carbon atoms, n is an integer greater than 1, B is a divalent alkylene or arylene radical having up to 19 carbon atoms and at least 50 mol percent fluorinated xylylene radical of Formula II, wherein x is an integer from 1 to 4 and wherein said Formulas are
Dependencies are inferred from the claim text.